Hitachi OE700 Series, Operating Manual

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6 Start-up
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28 Hitachi High-Tech Analytical Science
8. Place the displayed recalibration sample on the spark stand (1, fig. 6-2) and fix it
with the hold-down device (2).
9. Switch on the excitation source at the rotary knob (3) on the front of the instrument.
Fig. 6-2 Instrument front
10. Spark this well prepared (freshly ground, fat-free) sample at least 3 times by
pressing the start button (4) or clicking the "Start" button in the analysis screen.
Information
Avoid sparking the same point of the sample surface twice. The RSD value (RSD:
Relative Standard Deviation) is displayed after the third sparking and should be less
than or equal to 10 %.
•
If that is not the case, carry out further sparkings.
• The results of sparking with the greatest deviations from the average value should
be deleted. To delete individual sparkings, highlight the column or line by double-
clicking and click the "Delete" button.
Caution: Deletion cannot be undone!
11. Switch the excitation source off at the rotary knob (3) on the front of the instrument.
12. Clean the electrode tip.
13. Switch the excitation source back
on at the rotary knob on the front of the
instrument.
14. In the upper left of the screen click "Next" to spark the next recalibration sample.
Information
For the other samples, the RSD value should be less than or equal to 3 %.
Checking the results
After recalibration is completed ("Recalibration successful" note), proceed as follows to
check the recalibration factors:
1. Select "Show Recalibration" from the menu bar.
2. All values in the "Factor" column should range between 0.5 and 2.0, ideally near 1.
If factors and/or offset values are outside these ranges, please contact our local Hitachi
High-Tech Analytical Science service partner.
After start-up and recalibration, save the analytical data of the instrument as described
in the "Backup" chapter of the SpArcfire operating manual to make sure that all relevant
data can be recovered if required.
The customer is responsible for regular data backup.
Hitachi High-Tech Analytical Science cannot be called to account in the event of data
loss. Data loss can be caused by a failed hard disk, computer viruses, etc.
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